If the ultrasound confirms a seroma, it will likely require drainage 9 weeks out. If it is small enough you may wait it out to see if it resolves. Drainage is usually successful with closed aspiration. Sometimes a sclerosing agent such as sodium tetradecyl can be infused in the pocket. These have a tendency to recur and it may require a couple of treatments. For a seroma that is large, tender, or has stretched the skin it would likely require open exploration and excision of the "wall" of the seroma. I have had to do this on a couple of occasions and am always surprised of the thickness of this wall and what a difference it makes in the contour after it is removed.


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